ATMEGA165-16AU Atmel, ATMEGA165-16AU Datasheet - Page 249

• Manufacturer Part Number: ATMEGA165-16AU
• Description: IC AVR MCU 16K 16MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA165-16AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Latching of Fuses
Signature Bytes
Calibration Byte
Page Size
Parallel Programming
Parameters, Pin
Mapping, and
Commands
Signal Names
2573G–AVR–07/09
The status of the Fuse bits is not affected by Chip Erase. Note that the Fuse bits are
locked if Lock bit1 (LB1) is programmed. Program the Fuse bits before programming the
Lock bits.
The fuse values are latched when the device enters programming mode and changes of
the fuse values will have no effect until the part leaves Programming mode. This does
not apply to the EESAVE Fuse which will take effect once it is programmed. The fuses
are also latched on Power-up in Normal mode.
All Atmel microcontrollers have a three-byte signature code which identifies the device.
This code can be read in both serial and parallel mode, also when the device is locked.
The three bytes reside in a separate address space. The signature bytes are given in
Table 104.
Table 104. Device and JTAG ID
The ATmega165 has a byte calibration value for the internal RC Oscillator. This byte
resides in the high byte of address 0x000 in the signature address space. During reset,
this byte is automatically written into the OSCCAL Register to ensure correct frequency
of the calibrated RC Oscillator.
Table 105. No. of Words in a Page and No. of Pages in the Flash
Table 106. No. of Words in a Page and No. of Pages in the EEPROM
This section describes how to parallel program and verify Flash Program memory,
EEPROM Data memory, Memory Lock bits, and Fuse bits in the ATmega165. Pulses
are assumed to be at least 250 ns unless otherwise noted.
In this section, some pins of the ATmega165 are referenced by signal names describing
their functionality during parallel programming, see Figure 111 and Table 107. Pins not
described in the following table are referenced by pin names.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a posi-
tive pulse. The bit coding is shown in Table 109.
When pulsing WR or OE, the command loaded determines the action executed. The dif-
ferent Commands are shown in Table 110.
Part
ATmega165
8K words (16K bytes)
EEPROM Size
Flash Size
512 bytes
0x000
0x1E
Signature Bytes Address
Page Size
Page Size
64 words
4 bytes
0x001
0x94
PCWORD
PCWORD
EEA[1:0]
PC[5:0]
0x002
0x05
No. of Pages
No. of Pages
Part Number
128
128
9405
ATmega165/V
JTAG
PCPAGE
EEA[8:2]
PCPAGE
PC[12:6]
Manufacture ID
0x1F
EEAMSB
PCMSB
12
8
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